[#BloombergLP-bdlt-Datetime-setYearDayIfValid]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Datetime.adoc[Datetime]::setYearDayIfValid
:relfileprefix: ../../../
:mrdocs:

Set this object to have the value represented by the specified `year` and `dayOfYear` if they comprise a valid `Date` value (see `Date::isValidYearDay`). Return 0 on success, and a non‐zero value (with no effect) otherwise.

== Synopsis

Declared in `<bdlt_datetime.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
setYearDayIfValid(
    int year,
    int dayOfYear);
----


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